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From: James Knight <git@jdknight.me>
To: buildroot@buildroot.org
Cc: James Knight <git@jdknight.me>
Subject: [Buildroot] [PATCH v2 1/2] linux: support each linux latest lts version
Date: Fri,  8 Nov 2024 18:12:35 -0500	[thread overview]
Message-ID: <20241108231236.2838-1-git@jdknight.me> (raw)

Provides support for a board configuration to use the latest version of
the Linux kernel for a specific LTS. While the existing
`BR2_LINUX_KERNEL_LATEST_VERSION` allows desired configurations to roll
with a latest stable release, in some scenarios, a user may want the
same ability but for a specific Linux LTS. For example, if a user is
using an external toolchain that is also tied to a specific Linux LTS.

Having these new options avoids the need for rolling configuration to
rely on `BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE` with the
`BR2_DOWNLOAD_FORCE_CHECK_HASHES` option disabled.

Signed-off-by: James Knight <git@jdknight.me>
---
Changes v1 -> v2:
  - Updated versions to use latest versions tracked in `linux.hash`.

See also: https://lore.kernel.org/buildroot/CALAjcgXZKYjpsFV1E7Ry-0N5NEGV01hebSb8tEgoAtHvkfvCOA@mail.gmail.com/
---
 linux/Config.ext.in                  |  4 +--
 linux/Config.in                      | 45 ++++++++++++++++++++++++++++
 linux/linux.mk                       |  2 +-
 package/linux-headers/Config.in.host |  4 +--
 4 files changed, 48 insertions(+), 7 deletions(-)

diff --git a/linux/Config.ext.in b/linux/Config.ext.in
index 3cbf42d3447615105a67ca369fd728784c58ca8b..fe4abd779cfbb969dd1a865821b78fd62c7ca425 100644
--- a/linux/Config.ext.in
+++ b/linux/Config.ext.in
@@ -48,9 +48,7 @@ comment "xenomai needs a uClibc or glibc toolchain w/ threads"
 # RTAI
 config BR2_LINUX_KERNEL_EXT_RTAI
 	bool "RTAI Real-time patch"
-	depends on !BR2_LINUX_KERNEL_LATEST_VERSION
-	depends on !BR2_LINUX_KERNEL_LATEST_CIP_VERSION
-	depends on !BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION
+	depends on !BR2_LINUX_KERNEL_LATEST_SERIES
 	select BR2_PACKAGE_RTAI
 	help
 	  RTAI Kernel part.
diff --git a/linux/Config.in b/linux/Config.in
index 16c015b41261e0a12940c1cc1cca4745211b56b9..667601d6f010b6bd7fa1c1481ec54eb19043766a 100644
--- a/linux/Config.in
+++ b/linux/Config.in
@@ -16,6 +16,12 @@ if BR2_LINUX_KERNEL
 config BR2_LINUX_NEEDS_MODULES
 	bool
 
+# Track if the selected kernel version is a "latest" series. This can be
+# used handle certain configurations such as preventing the use of the
+# RTAI Real-time patch.
+config BR2_LINUX_KERNEL_LATEST_SERIES
+	bool
+
 #
 # Version selection. We provide the choice between:
 #
@@ -29,10 +35,42 @@ choice
 
 config BR2_LINUX_KERNEL_LATEST_VERSION
 	bool "Latest version (6.11)"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_11 if BR2_KERNEL_HEADERS_AS_KERNEL
 
+config BR2_LINUX_KERNEL_LATEST_LTS_6_6_VERSION
+	bool "Latest LTS 6.6 version"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_6 if BR2_KERNEL_HEADERS_AS_KERNEL
+
+config BR2_LINUX_KERNEL_LATEST_LTS_6_1_VERSION
+	bool "Latest LTS 6.1 version"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_1 if BR2_KERNEL_HEADERS_AS_KERNEL
+
+config BR2_LINUX_KERNEL_LATEST_LTS_5_15_VERSION
+	bool "Latest LTS 5.15 version"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_15 if BR2_KERNEL_HEADERS_AS_KERNEL
+
+config BR2_LINUX_KERNEL_LATEST_LTS_5_10_VERSION
+	bool "Latest LTS 5.10 version"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10 if BR2_KERNEL_HEADERS_AS_KERNEL
+
+config BR2_LINUX_KERNEL_LATEST_LTS_5_4_VERSION
+	bool "Latest LTS 5.4 version"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4 if BR2_KERNEL_HEADERS_AS_KERNEL
+
+config BR2_LINUX_KERNEL_LATEST_LTS_4_19_VERSION
+	bool "Latest LTS 4.19 version"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19 if BR2_KERNEL_HEADERS_AS_KERNEL
+
 config BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 	bool "Latest CIP SLTS version (5.10.162-cip24)"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10 if BR2_KERNEL_HEADERS_AS_KERNEL
 	help
 	  CIP launched in the spring of 2016 to address the needs of
@@ -53,6 +91,7 @@ config BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 
 config BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION
 	bool "Latest CIP RT SLTS version (5.10.162-cip24-rt10)"
+	select BR2_LINUX_KERNEL_LATEST_SERIES
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10 if BR2_KERNEL_HEADERS_AS_KERNEL
 	help
 	  Same as the CIP version, but this is the PREEMPT_RT realtime
@@ -135,6 +174,12 @@ config BR2_LINUX_KERNEL_CUSTOM_REPO_GIT_SUBMODULES
 config BR2_LINUX_KERNEL_VERSION
 	string
 	default "6.11.6" if BR2_LINUX_KERNEL_LATEST_VERSION
+	default "6.6.59" if BR2_LINUX_KERNEL_LATEST_LTS_6_6_VERSION
+	default "6.1.115" if BR2_LINUX_KERNEL_LATEST_LTS_6_1_VERSION
+	default "5.15.170" if BR2_LINUX_KERNEL_LATEST_LTS_5_15_VERSION
+	default "5.10.228" if BR2_LINUX_KERNEL_LATEST_LTS_5_10_VERSION
+	default "5.4.284" if BR2_LINUX_KERNEL_LATEST_LTS_5_4_VERSION
+	default "4.19.322" if BR2_LINUX_KERNEL_LATEST_LTS_4_19_VERSION
 	default "5.10.162-cip24" if BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 	default "5.10.162-cip24-rt10" if BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION
 	default BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE \
diff --git a/linux/linux.mk b/linux/linux.mk
index 1d3d8fffa6085c58d024a8519377365d19766521..477d1e16143bea2f106e7f3f9212d0efefc98db1 100644
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -49,7 +49,7 @@ LINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v$(firstword $(subst ., ,$(LINUX_
 endif
 endif
 
-ifeq ($(BR2_LINUX_KERNEL)$(BR2_LINUX_KERNEL_LATEST_VERSION),y)
+ifeq ($(BR2_LINUX_KERNEL)$(BR2_LINUX_KERNEL_LATEST_SERIES),y)
 BR_NO_CHECK_HASH_FOR += $(LINUX_SOURCE)
 endif
 
diff --git a/package/linux-headers/Config.in.host b/package/linux-headers/Config.in.host
index 2f7a731d369ad7ac8f2a353fefa1a94c3740e8b1..d47f9fde29e327a05287aa874a46337963f620aa 100644
--- a/package/linux-headers/Config.in.host
+++ b/package/linux-headers/Config.in.host
@@ -114,9 +114,7 @@ endif
 choice
 	bool "Custom kernel headers series"
 	default BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_REALLY_OLD
-	depends on !BR2_LINUX_KERNEL_LATEST_VERSION || !BR2_KERNEL_HEADERS_AS_KERNEL
-	depends on !BR2_LINUX_KERNEL_LATEST_CIP_VERSION || !BR2_KERNEL_HEADERS_AS_KERNEL
-	depends on !BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION || !BR2_KERNEL_HEADERS_AS_KERNEL
+	depends on !BR2_LINUX_KERNEL_LATEST_SERIES || !BR2_KERNEL_HEADERS_AS_KERNEL
 	depends on BR2_KERNEL_HEADERS_VERSION || BR2_KERNEL_HEADERS_AS_KERNEL || \
 		   BR2_KERNEL_HEADERS_CUSTOM_TARBALL || BR2_KERNEL_HEADERS_CUSTOM_GIT
 	help
-- 
2.46.2.windows.1

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             reply	other threads:[~2024-11-08 23:13 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-08 23:12 James Knight [this message]
2024-11-08 23:12 ` [Buildroot] [PATCH v2 2/2] support: add a kernel version configuration helper script James Knight
2025-08-29 16:54   ` Arnout Vandecappelle via buildroot

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